/Engine/Source/Runtime/MovieScene/Public/EntitySystem/MovieSceneEntityManager.h
this is a general purpose convenience utility which should not be used for high-performance runtime code. SeeFEntityTaskBuilder.
template<typename T, typename ValueType> void WriteComponentChecked ( [FMovieSceneEntityID](API\Runtime\MovieScene\EntitySystem\FMovieSceneEntityID) Entity, [TComponentTypeID](API\Runtime\MovieScene\EntitySystem\TComponentTypeID)< T > ComponentTypeID, ValueType && Value )